xen: Add __attribute__((format(printf... where appropriate

Use the compiler to verify printf formats and arguments.

Fix fallout.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 6cc0db1bf522..3f129b45451a 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -684,7 +684,7 @@ again:
 
         err = xenbus_switch_state(dev, XenbusStateConnected);
         if (err)
-                xenbus_dev_fatal(dev, err, "switching to Connected state",
+                xenbus_dev_fatal(dev, err, "%s: switching to Connected state",
                                  dev->nodename);
 
         return;